Deep in the Jungles - Ivars Peterson (MathTrek)
Humans are predisposed to seeing order and meaning in a world that too often presents random choices and chaotic evidence. Random events sometimes get linked into a meaningful, though ultimately bogus, scenario... At the same time, the mathematics of
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Developing Algebraic Thinking - Suzanne Alejandre
Teacher lesson plan and student kinesthetic activities on the Traffic Jam activity and applet, as originally published in the inaugural (Fall, 2002) issue of ON-Math, an electronic journal of the National Council of Teachers of Mathematics (NCTM).
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Digital Math - Santa Barbara County Education Office
A site to assist Algebra I, Grade 7, and Grade 6 students, their parents, and educators with the California State Mathematics Content Standards. Log in for Quicktime that provides step-by-step instruction to solve problems aligned with the mathematics
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Divisible by 3 - Andrew Stadel
Stadel has taught pre-algebra, algebra, and geometry in middle school since 2004. His blog about "interactions with math, logic, life, teaching, and the web they spin together" dates back to March, 2012, with posts such as "Survey your students"; "2012
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Division by Zero - Dave Richeson
A blog about "math, puzzles, teaching, and academic technology." Posts, which date back to September of 2008 and sometimes introduce original applets, have included "Volumes of n-dimensional balls," "Albrecht Dürer's ruler and compass constructions,"
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Divisor Plot - Jeffrey Ventrella
"We hear of primes described as the 'building blocks' of all numbers. Let's turn that concept on [its] head. Instead, let's think of primes as the negative spaces behind complex objects. Imagine a series of picket fences stacked in front of each other.
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Dominoes Activity - Suzanne Alejandre
A classroom activity (similar to Pentomino + 1 = Hexomino; a variation on polyominoes) aligned to the NCTM and California Standards, to be explored through manipulatives (paper dominoes). Students explore whether it is possible to cover a 6x5 grid with
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DragonBox - WeWantToKnow AS
"Secretly teaching algebra to your children" by letting them discover algebraic rules, play with them, then use the rules to solve puzzles through trial and error. See testimonials and videos about this multi-platform math game created by WeWantToKnow
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Early Algebra Thinking - Bethany Rittle-Johnson
Evaluating the role of explanation in mathematics learning — specifically, "why" explanations, or reasoning about why something is true. See, in particular, the abstracts, published articles, and coding schemes and other instruments from Rittle-Johnson's
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Easing the Hurry Syndrome - Jennifer Wilson
Blog by a teacher in Flowood (Mississippi) whose course load includes Advanced Placement Calculus and Geometry. Posts often begin with alignments to relevant Common Core State Standard (CCSS) and feature screenshots of TI-Nspire CAS Navigators, with original
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Education by Design
Publishers of educational software, focusing on special needs software for Windows and Macintosh that can be accessed with keyboard, mouse, and especially with IntelliKeys, Touch Windows or with switches. Math titles include MathPad, an arithmetic tutorial
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emGames - Wright Group/McGraw-Hill
Twelve Shockwave games aligned to the Everyday Math curriculum for the early grades. Game topics include the basic operations (including angle addition), place value, money, estimation, factoring, and choosing the larger of two numbers. Many games involve
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The EMPower Project - TERC
Extending Mathematical Power: A Math Curriculum for Adults, extends school mathematics reform to currently under-served populations so that they more effectively engage mathematical demands at work, at home as parents and caregivers, in the community,
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Euler and Erdős - Jean Pierre Mutanguha
Blog of self-described amateur research in tribute to Leonhard Euler and Paul Erdős, "muses" to an author who considers it "hard to find math blogs aimed at undergraduates." Posts, which date back to May, 2013, have included "Envelopes and Astroids,"
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Finding Ways to Nguyen Students Over - Fawn Nguyen
Nguyen blogs mostly about her teaching middle school math. Posts, which date back to November, 2011, have included "Teaching 101 -- How I Got Like This," "Puzzles and Brainteasers, Set 11," "Pi Day Activities," "Always Sometimes Never," "Using Excel for
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Flash Games - ATK Solutions, Inc.
Flash applets and games include rotating 3d cube; mind boggle square, which challenges you to slide a square across a surface by sliding other quadrilaterals into the unoccupied spaces; Futoshiki, which involves positioning counting numbers on a grid
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Focus on Student Practice - Suzanne Alejandre
Article about how students worked on the Problem of the Week (PoW) "Wooden Legs" in a way that developed the Common Core State Standards (CCSS) Mathematical Practice of "making sense of problems and persevering in solving them." This article, originally
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fractionfanatic - Julie Morgan
Blog by an Australian who has taught high school maths in the Scottish Borders since 2004. Posts, which date back to December, 2015, have included "Learning Intentions and PPPB (Pose Pause Pounce Bounce)," "#MTBoS12days Moment that challenged me," "Quadratics
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Gary Haynes - Gary Haynes
Course syllabi, lesson plans, homework, and objectives. Visit "Tangrams and Other Games" for an interactive tangram story and a Flash presentation on how to develop an understanding of functions through the use of the motion sensor.
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Geometry Out of Africa - Ivars Peterson (MathTrek)
Two recent books that introduce African geometry. Geometry from Africa, by Paulus Gerdes, shows how one can discover or derive the Pythagorean theorem from African designs, explores the role of symmetry (with suggestions for home and classroom crafts
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Geometry through Art - Norman Shapiro
Lesson ideas, facilitation suggestions, lists of materials needed, and handouts to photocopy. Norman Shapiro focuses on the student as investigator, learning through doing, and using perception to stimulate the motivation for more developed concepts and
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Greg Tang Math - Greg Tang
Educational materials that combine problem-solving and arithmetic, and integrate math with language and art, from the author of The Grapes of Math, Math For All Seasons, The Best of Times, Math Appeal, Math-terpieces, Math Fables, and Math Potatoes. In
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Growing Exponentially - Heather Kohn
Blog of "reflections on teaching math and striving to do better each day than the last." Posts, which date back to August, 2012, have included "Olympic Fever," "Work in your head, Points in my head," "Graphing Calculator Activities," "Absolute Value Project,"
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Harry O'Malley
Blog by a math teacher who believes "... that learning to use mathematics changes people's lives in profound and valuable ways," and describes himself as "obsessed with making that happen for people. I am convinced that recent advancements in technology
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